hmmmmmmm.....no nid kua, ur car is not track car lar
precisely. not much weight u can reduce from ur car if u want to maintain it as a daily driven car.
if u hantam in sr16ve u will farking happy cozs it comes with a smaller battery. hehe............... comparing to our battery which is big like hell. so best way is not to reduce ur car weight but to fit in a powerful engine.
my opinion is that every engine has its own limit in terms of power due the engine design. for qg16de it comes with 110bhp and u can hantam in 4-2-1, exhaust modification, air intake modification, use iridium plug, high duration cam, use MSD ignition, hantam in emanage, use lighten crank pulley, port & polish the head, use bigger throtle body. end up u might get 150bhp but the FC is like hell. the engine runs rough during idle. and if u always rev til redine do not how long can ur block last cozs afterall u are still running on qg16de which is not built for endurance. might as well hantam in sr16ve which have a better FC and performance and feel than ur heavily modified qg16de.
so bro tohsan, dont reduce ur car weight, goto KSR speed tomolo morning and ask them kasih u sr20ve + T. hehe.........
my 2 cents.